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Oklahoma General Knowledge Practice Test 4

50 questions covering general knowledge content, drawn from the FMCSA-aligned CDL question pool and the Oklahoma Commercial Driver's License Manual.

What this test covers

The General Knowledge test has 50 multiple-choice questions in most states (some states use a slightly different question count). You need an 80% score to pass. Topics include safe driving practices, transporting cargo safely, vehicle inspection procedures, communication with other drivers, speed and space management, hazard awareness, distracted-driving rules, fatigue and hours of service basics, accident procedures, and the consequences of alcohol and controlled substance use. The test draws from the General Knowledge section of your state's CDL manual.

Sample General Knowledge questions

Preview of what is on Practice Test 4. Unlock with Pro to take the full 50-question test.

3 free preview of 50
1

On open stretches of I-44 in Oklahoma, what is a major hazard for high-profile commercial vehicles?

2

When driving a commercial vehicle down a steep grade, what is the correct braking technique?

3

Under FMCSA hours of service rules, how many consecutive hours of off-duty time must a CDL driver have before driving again after reaching the 11-hour driving limit?

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Oklahoma CDL General Knowledge Practice Test 4 2026 | DMV IQ